2004 Dakota 4.7L P0172
#1
2004 Dakota 4.7L P0172
Bought truck, was sitting for some time(9 years)... found it had failed cams and timing chains. Pulled engine and rebuilt top to bottom. Now... Engine running rich. Stumbles, loss of power and horrible fuel economy. Throwing the P0172 code.
Injectors, coils, fuel pump, IAC valve, TPS, coolant temp sensor, all 4 02 sensors, cats etc. all replaced. Has high fuel pressure; (spec is 49 +/-2) at 60 PSI and needle bounces around. Replaced fuel pump twice thinking the regulator was failed. Tried to buy the OEM fuel pump but it is discontinued, so bought the Delphi brand. Any help would be nice. Thanks.
Injectors, coils, fuel pump, IAC valve, TPS, coolant temp sensor, all 4 02 sensors, cats etc. all replaced. Has high fuel pressure; (spec is 49 +/-2) at 60 PSI and needle bounces around. Replaced fuel pump twice thinking the regulator was failed. Tried to buy the OEM fuel pump but it is discontinued, so bought the Delphi brand. Any help would be nice. Thanks.
#3